Orbs have always been a question with paranormal investigators.
Most now, will not keep evidence of orbs. In our beliefs,
an orb is energy of an entity. Orbs are going to look as a
solid ball of light. A lot of people and investigators get
dust confused with orbs. This is something that is normal
and you will get better as you do more investigations.

Dust can look like
an orb because it is circular and looks solid. Most dust
has a foggy look in the center, also it is not always a complete
circle. When you get a picture of an orb, make sure you
zoom in and take a look. The biggest problem I see with
dust is that when people take photos and see hundreds of dust
balls, they believe they are all orbs. That is the biggest
mistake. Orbs don't move in clusters. They normally
move on there own. If you go out ghost hunting let all
dust in the area to settle before taking pictures.

Moisture is another that
is mistaken for orbs. Like orbs it looks circular and has a blue
color. So when you go out ghost hunting, know the environment, so
when you take pictures you will know more of what your getting.